Aim of the study: In athletes, groin pain-related adductor strain is a common problem in sports medicine, like groin injuries, so the study investigated the effect of Photobiomodulation (905 nm) and Trigger Band Technique (TBT) on handball athletes' groin adductor strain. Methods: Forty handball athletes with adductor groin strain were divided into an experimental group (A) that received Diode laser 905nm, TBT, and medical treatment, while control group (B) received sham laser with TBT and medical treatment for four weeks. Outcome measures investigated Copenhangen hip and groin outcome score, pressure algometry, creatine kinase, and lactate dehydrogenase levels. Results: Both groups showed a significant improvement in the post-treatment outcome measures, where experimental group showed more significant improvement than the control group with p-value >0.05. Conclusion: results imply that treatment of handball athlete's groin adductor strain by TBT and low-level laser is more effective than TBT alone.